A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers

Linewidth measurements of a distributed feedback (DFB) fibre laser are made using delayed self heterodyne interferometry (DHSI) with both Mach-Zehnder and Michelson interferometer configurations. Voigt fitting is used to extract and compare the Lorentzian and Gaussian linewidths and associated sourc...

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Autores principales: Canagasabey, Albert, Michie, Andrew, Canning, John, Holdsworth, John, Fleming, Simon, Wang, Hsiao-Chuan, Åslund, Mattias L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2011
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231253/
https://www.ncbi.nlm.nih.gov/pubmed/22163692
http://dx.doi.org/10.3390/s111009233
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author Canagasabey, Albert
Michie, Andrew
Canning, John
Holdsworth, John
Fleming, Simon
Wang, Hsiao-Chuan
Åslund, Mattias L.
author_facet Canagasabey, Albert
Michie, Andrew
Canning, John
Holdsworth, John
Fleming, Simon
Wang, Hsiao-Chuan
Åslund, Mattias L.
author_sort Canagasabey, Albert
collection PubMed
description Linewidth measurements of a distributed feedback (DFB) fibre laser are made using delayed self heterodyne interferometry (DHSI) with both Mach-Zehnder and Michelson interferometer configurations. Voigt fitting is used to extract and compare the Lorentzian and Gaussian linewidths and associated sources of noise. The respective measurements are w(L) (MZI) = (1.6 ± 0.2) kHz and w(L) (MI) = (1.4 ± 0.1) kHz. The Michelson with Faraday rotator mirrors gives a slightly narrower linewidth with significantly reduced error. This is explained by the unscrambling of polarisation drift using the Faraday rotator mirrors, confirmed by comparing with non-rotating standard gold coated fibre end mirrors.
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spelling pubmed-32312532011-12-07 A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers Canagasabey, Albert Michie, Andrew Canning, John Holdsworth, John Fleming, Simon Wang, Hsiao-Chuan Åslund, Mattias L. Sensors (Basel) Article Linewidth measurements of a distributed feedback (DFB) fibre laser are made using delayed self heterodyne interferometry (DHSI) with both Mach-Zehnder and Michelson interferometer configurations. Voigt fitting is used to extract and compare the Lorentzian and Gaussian linewidths and associated sources of noise. The respective measurements are w(L) (MZI) = (1.6 ± 0.2) kHz and w(L) (MI) = (1.4 ± 0.1) kHz. The Michelson with Faraday rotator mirrors gives a slightly narrower linewidth with significantly reduced error. This is explained by the unscrambling of polarisation drift using the Faraday rotator mirrors, confirmed by comparing with non-rotating standard gold coated fibre end mirrors. Molecular Diversity Preservation International (MDPI) 2011-09-27 /pmc/articles/PMC3231253/ /pubmed/22163692 http://dx.doi.org/10.3390/s111009233 Text en © 2011 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Canagasabey, Albert
Michie, Andrew
Canning, John
Holdsworth, John
Fleming, Simon
Wang, Hsiao-Chuan
Åslund, Mattias L.
A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers
title A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers
title_full A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers
title_fullStr A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers
title_full_unstemmed A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers
title_short A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers
title_sort comparison of delayed self-heterodyne interference measurement of laser linewidth using mach-zehnder and michelson interferometers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231253/
https://www.ncbi.nlm.nih.gov/pubmed/22163692
http://dx.doi.org/10.3390/s111009233
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